/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.lucene.queryparser.flexible.core.config;

/**
 * This interface should be implemented by classes that wants to listen for
 * field configuration requests. The implementation receives a
 * {@link FieldConfig} object and may add/change its configuration.
 * 
 * @see FieldConfig
 * @see QueryConfigHandler
 */
public interface FieldConfigListener {

  /**
   * This method is called ever time a field configuration is requested.
   * 
   * @param fieldConfig
   *          the field configuration requested, should never be null
   */
  void buildFieldConfig(FieldConfig fieldConfig);

}
